The battery is one of the most vulnerable components of the Xiaomi smartphone, which gradually loses capacity even when used carefully. After 1-2 years of active use, many users notice that the phone discharges 2 times faster than after buying. But how exactly do you know how worn out the battery is? Is there a way to check its condition without disassembling the device and specialized tools?
In this article, we will discuss 7 working methods for diagnosing the battery on Xiaomi, Redmi and POCO smartphones, from standard MIUI functions to engineering menus and third-party applications. You will learn how to interpret wear indicators, what values are considered critical, and what to do if the battery requires replacement. All instructions are relevant for Android 10β14 devices with a MIUI 12β15 shell.
1. Check through the Battery Status menu in MIUI
The easiest way to assess battery health is to use the built-in MIUI utility, which is available on most modern Xiaomi models (starting with MIUI 12) and displays basic wear data.
To open this menu:
- Go to Settings β Battery and performance.
- Slap the gear icon (βοΈ) top-right.
- Select the battery status.
Here you will see two key parameters:
- π Current capacity is the actual battery capacity per mAh (e.g., 4,000 mAh out of 4,500 mAh). The difference between the baseline and current value indicates the degree of wear and tear.
- π Charging cycles are the number of total discharges/charges. After 500-600 cycles, the capacity usually drops by 20-30%.
π‘
If the battery status item is not on the menu, upgrade to the latest version of MIUI or use alternative methods from this article.
Note that on some models (such as the Xiaomi 11T or Redmi Note 10 Pro), this section may be called Battery Health or hidden behind additional settings. If you haven't found it, try the following method.
2. Secret engineering codes for diagnostics
Xiaomi smartphone makers hide advanced battery data behind special service codes, which allow you to get information that is not available in the standard interface.
Here are the most effective combinations:
- π± ##4636## β Opens the Testing menu. Go to the Battery Information tab, where you can see: Charge Level, Voltage, Temperature, Technology (usually Li-ion or LiPo).
- π§ ##284## - Battery test (works on some Redmi models) shows capacity as a percentage of the original capacity.
- π ##6484## - Advanced information about the charger and battery (for Xiaomi on Qualcomm processors).
If nothing happens after you enter the code, your model doesn't support that command, and don't try to enter codes at random, because it can cause the system to crash.
3. Applications for deep diagnostics
Standard MIUI tools often don't provide enough data, and for detailed analysis, we recommend using third-party tools that not only show current capacity, but also discharge rate, full charge time, and usage history.
Top.-3 tested applications:
| Annex | Features | Link (Google Play) |
|---|---|---|
| AccuBattery | It shows real capacity and wear in percent. It tracks charging cycles. It analyzes discharge rates by application. | Download |
| CPU-Z | It displays the battery's technical data (voltage, temperature) and it shows the processor and memory. | Download |
| Battery Guru | Monitors battery health in real time, offers tips for optimizing charging. | Download |
For accurate diagnosis with AccuBattery:
Charge your phone to 100% and wait for notifications from the app |Discharge to 15-20% without recharging |Repeat cycle 2-3 times for calibration |Check the Health section for wear analysis-->
Important: The first 2-3 charge/discharge cycles after the application is installed may show inaccurate data.
4.Analysis through ADB (for advanced users)
If you want the most accurate data on the battery, you can use ADB (Android Debug Bridge), which requires connecting the phone to a computer, but gives you access to hidden parameters that do not show the application.
Instructions:
- Turn on Developer Mode on your phone: go to Settings β About Phone and tap 7 times on the MIUI version.
- Return to Settings β Additional β For developers and activate Debugging over USB.
- Connect your phone to your PC, install it. ADB-Drivers and open the command line.
- Enter the command: adb shell dumpsy battery
In the answer, pay attention to the following parameters:
- π Capacity is the current capacity in %. If the value is below 80%, the battery is severely worn out.
- β‘ Voltage: Norm for Li-ion: 3.7-4.2 V.
- π charge counter (in ΞΌAh) Compare it to passport capacity.
What if the ADB does not recognize the device?
This method is suitable for power users. If you have never worked with ADB, it is better to use the applications from the previous section.
5.Visual signs of battery wear
Even without special tools, you can suspect problems with the battery for indirect reasons.
- π₯ The phone gets very hot during charging or use (especially in the battery area).
- β‘ Charging is interrupted by 80-90% or the phone is turned off at 10-15% charge.
- π Battery life is reduced by 30% or more compared to the new device.
- π₯ The phone body swelled (seen by the gaps between the screen and the frame).
β οΈ Warning: If the battery is swelling, stop using the phone immediately. Lithium-ion batteries in this state can ignite.
Also check if the phone is not running out when it is off, and if it loses more than 5 to 10 percent of its charge overnight, it is a sign of high battery self-discharge.
Comparison with passport characteristics
To understand how critical wear is, compare the current battery performance with the baseline. Below is a table of averages for popular Xiaomi models:
| Model | Reference capacity (mAh) | Critical wear (less than) | Average service life (cycles) |
|---|---|---|---|
| Xiaomi 13/13 Pro | 4820 / 5000 | 3800β4000 | 600β800 |
| Redmi Note 12 Pro+ | 5000 | 4000 | 500β700 |
| POCO F5 | 5000 | 4000β4200 | 500β600 |
| Xiaomi 12T | 5000 | 3800β4000 | 600β700 |
If your battery capacity is below the critical value, it is recommended to replace it. Also pay attention to the charging speed: if the phone charges longer than 50% of the stated time (for example, 2 hours instead of 1 hour), this is another sign of wear and tear.
π‘
A battery is considered to be severely worn out if its capacity has fallen below 70-75% of its original capacity, in which case battery life is reduced by 30-50%.
7. When is it time to change the battery?
Replacement of the battery is required not only with obvious signs of wear, but also in the following cases:
- π The phone does not hold a charge for more than 3-4 hours with moderate use.
- π Charging is interrupted or occurs in jerks (for example, jumps from 50% to 30%).
- π₯ There are cracks or swellings on the body (even small ones).
- π± The device spontaneously turns off at 20-30% charge.
The cost of replacing the battery in official Xiaomi service centers varies from 1,500 to 4,000 rubles depending on the model. Using non-original batteries can lead to overheating or rapid failure.
β οΈ Note: If you choose to replace the battery yourself, use only original Xiaomi-branded parts or certified analogues. Cheap batteries without protection can cause a fire.